mail.go-concepts.nl

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:50:18:61:35:d1:44:ee:65:df:93:f2:87:d9:93:a5:f0:a7 was issued on by Let's Encrypt.

This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.


We have idenified some issues with this certificate:
  • Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)

Certificate Subject

CN=mail.go-concepts.nl

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:50:18:61:35:d1:44:ee:65:df:93:f2:87:d9:93:a5:f0:a7
Serial Number (int): 288591853365197661021287324133309865652391
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 49:1f:0b:21:61:42:ba:fd:ed:af:9a:e8:7e:b8:88:d5:a2:5a:6e:a8
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): ec:03:e3:a2:6c:ed:f4:42:11:a8:6b:39:1b:2c:67:70:7a:5f:09:a7
Fingerprint (sha256): 76:bb:2b:77:e0:c7:8e:a4:50:11:06:a8:f3:de:03:8a:52:59:28:c1:b9:b4:90:0b:89:dd:10:6b:46:db:e7:a0

Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/

Revocation information

OCSP Server: http://ocsp.int-x3.letsencrypt.org

Check the revocation status for certificate mail.go-concepts.nl

1

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.go-concepts.nl

Public Key Algorithm

RSA

Key Size

2048

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication

Extensions

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

mail.go-concepts.nl

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plesk.go-concepts.nl
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voip.go-concepts.nl
go-concepts.nl
go-concepts.nl
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ticket.go-concepts.nl
project.go-concepts.nl
ticket.go-concepts.nl
plesk.go-concepts.nl
voip.go-concepts.nl
plesk.go-concepts.nl
project.go-concepts.nl
git.go-concepts.nl
mail.go-concepts.nl
mail.go-concepts.nl
go-concepts.nl
plesk.go-concepts.nl
project.go-concepts.nl
plesk.go-concepts.nl
git.go-concepts.nl
plesk.go-concepts.nl
plesk.go-concepts.nl
ticket.go-concepts.nl
go-concepts.nl
go-concepts.nl
git.go-concepts.nl
git.go-concepts.nl
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project.go-concepts.nl
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git.go-concepts.nl

Certificate

The complete raw certificate details for mail.go-concepts.nl in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwKkt+2+g6AquqZ7xmMyQ
rhMP1y/DFMW7f1Gvo0RCg12mCdsriM37ZnHhoHmTUoBwhs/wW6MpNXrx3YspYWyu
4yCL92U0BagrjTzu7BnkbZvWhvVSb/BVH/4DQBFYoIEbqNW30r6rGxTN3BXS3lsK
yINzCLX3lg80b6rxpFBm12gFZb2/GVxN/bSdsIZvDebUErtMetgmKTfthjNZzHjr
QoRLMSbOW0NH3GDLfcVvwZhxPwiQ0YPaIo/+4NdR/iOoPmsNq0BF8xuGblts6Y1N
q0S9dk4XzjC2xF/XaSERe9F0laGa7L/wUn5QDquAuHpBPiCFCsB16KlgyYCcLpye
UwIDAQAB
-----END PUBLIC KEY-----

ASN.1 decoded

 [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2
 . . . . . . . . [c:0|t:2|false] INTEGER 288591853365197661021287324133309865652391
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt'
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2019-10-04 16:12:24 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2020-01-02 16:12:24 +0000 UTC
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'mail.go-concepts.nl'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption)
 . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 24321180132363746726218611198524717912052862754643921684837085265271571719638058516304641326593959683845796456943916157080968301313422144124342534287422860034071985462163853637775164000484855500223016512813309891672791825125332452648793064027856641983568887304349528451754018394933762654838318380086900406318245289363715042670130025446338157469616609296021055395246645528923922028674977977119934309679535412311584470948670379888486136633667653944967358039058261104053220877375512788419204800441271897863614364235041890704992072937551384343520494208577652028912754675009064347196070858055826766457808723864121729916499
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537

 . . . . . . . . [c:2|t:3|true] ORAddress 
 . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits)
							05a0
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							491f0b216142bafdedaf9ae87eb888d5a25a6ea8
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (99 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (23 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.go-concepts.nl'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (69 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps)
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (243 bytes)
							00f1007700f095a459f200d18240102d2f93888ead4bfe1d47e399e1d034a6b0a8aa8eb2730000016d97c21eff000004030048304602210093b6a85f1625246bf2426eaf0f0a807ea391ace3bee75ee7464d5971203dc739022100c7a71e91324fdf8c7cd91c4084974e52b0451db76c2089cd22d70294218bc145007600293c519654c83965baaa50fc5807d4b76fbf587a2972dca4c30cf4e54547f4780000016d97c21f09000004030047304502202593c5248920ef9501c9a97c919bc31343158c7f1461405374994c1d6de12632022100ad379a11282c368a09023905c0bc92257c50b6c6534b985aa4f9dfca35ba387c
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption)
 . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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